added a description of what the layout in the template means and where is everything
added a description of what the layout in the template means and where is everything

citrix-openstack-build/pecan,ryanpetrello/pecan,StackStorm/pecan,jimrollenhagen/pecan,ryanpetrello/pecan,jdandrea/pecan,pecan/pecan,jdandrea/pecan,jimrollenhagen/pecan,StackStorm/pecan,citrix-openstack-build/pecan,pecan/pecan